What component of volcanic eruptions can block sunlight over large areas?

Based on the information given above, which of the following models best represents the relationship between zooplankton , minno

solmaris [256]

Answer:

Option C: Minnows have a direct negative effect (⇒(-)) on the population size of zooplankton. Basses have a negative effect (⇒(-)) on the population size of minnows. Basses have an indirect positive (---> (+)) effect on zooplankton.

Explanation:

In the trophic web occurs a process of energy transference through different organisms that places at different levels. Each level feeds on the preceding one and becomes food for the next one. The first link is an autotroph organism or producer. The following links are the consumers: herbivores are primary consumers and feed on producers. Carnivores are secondary consumers and feed on herbivores, and so on. The last links are the decomposers, microorganisms that act on dead animals degrading organic matter.

If any of the links change their population size (increasing it or decreasing it), it affects the superior links and the immediately anterior link.

In the exposed example, zooplankton, minnows, and basses are continuously interacting.

Minnow →(-) Zooplankton

Minnows feed on zooplankton. So they affect direct and negatively the invertebrate population. The more minnows there are, the more zooplankton they eat. So, as long as the minnows population keeps growing, the zooplankton population will be more affected because they will not have enough time to reproduce and recover from predation.

Bass →(-) Minnows

Bass feed on minnows, so they also affect direct and negatively the fish population. And the more the bass population grows in size, the more affected the minnows will be because many more basses will be eating them.

Bass ---->(+) Zooplankton

On the other hand, by negatively affecting the minnows population, basses will be indirectly and positively influencing the zooplankton population. This fact is because the more minnows basses eat, the fewer fishes there will be to prey on zooplankton. So the invertebrate will have enough time to recover its population size. The predation pressure acting on zooplankton will decrease thanks to the action of basses preying on minnows.

Here there is a natural equilibrium between the three species. It is a representation of typical cycle predator-prey.

Minnows prey on zooplankton. Minnows population grows, and the zooplankton population decreases.

As the minnow population grows, there is more available food for basses, who eat more minnows. As the bass population increases, the minnows population decreases in size. And as there are fewer minnows, the zooplankton population will increase.

If minnows decrease in number, basses will decrease in number too. Minnows will not be severely affected by basses, so their population increases again.

As zooplankton also increased, there will be more available food for minnows that will keep reproducing. And the more minnows there are, the more available food for basses there will be. And basses population will increase again. So you can see that zooplankton is indirectly and positively affecting the basses population too (not shown in images).

6 0

3 years ago

What are the Animal cells label?

LiRa [457]

Answer:Here they are.

Explanation:

Cell Membrane

The thin layer of protein and fat that surrounds the cell. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others.

Centrosome (Microtubule Organizing Center)

A small body located near the nucleus - it has a dense center and radiating tubules. The centrosomes is where microtubules are made. During cell division (mitosis), the centrosome divides and the two parts move to opposite sides of the dividing cell. The centriole is the dense center of the centrosome.

Cytoplasm

The jellylike material outside the cell nucleus in which the organelles are located.

Golgi body (Golgi Apparatus/Golgi Complex)

A flattened, layered, sac-like organelle that looks like a stack of pancakes and is located near the nucleus. It produces the membranes that surround the lysosomes. The Golgi body packages proteins and carbohydrates into membrane-bound vesicles for “export” from the cell.

Lysosome (Cell Vesicles)

Round organelles surrounded by a membrane and containing digestive enzymes. This is where the digestion of cell nutrients takes place.

Mitochondrion

Spherical to rod-shaped organelles with a double membrane. The inner membrane is infolded many times, forming a series of projections (called cristae). The mitochondrion converts the energy stored in glucose into ATP (adenosine triphosphate) for the cell.

Nuclear Membrane

The membrane that surrounds the nucleus.

Nucleolus

An organelle within the nucleus - it is where ribosomal RNA is produced. Some cells have more than one nucleolus.

Nucleus

Spherical body containing many organelles, including the nucleolus. The nucleus controls many of the functions of the cell (by controlling protein synthesis) and contains DNA (in chromosomes). The nucleus is surrounded by the nuclear membrane.

Ribosome

Small organelles composed of RNA-rich cytoplasmic granules that are sites of protein synthesis.

Rough Endoplasmic Reticulum (Rough ER)

A vast system of interconnected, membranous, infolded and convoluted sacks that are located in the cell’s cytoplasm (the ER is continuous with the outer nuclear membrane). Rough ER is covered with ribosomes that give it a rough appearance. Rough ER transports materials through the cell and produces proteins in sacks called cisternae (which are sent to the Golgi body, or inserted into the cell membrane).

Smooth Endoplasmic Reticulum (Smooth ER)

A vast system of interconnected, membranous, infolded and convoluted tubes that are located in the cell’s cytoplasm (the ER is continuous with the outer nuclear membrane). The space within the ER is called the ER lumen. Smooth ER transports materials through the cell. It contains enzymes and produces and digests lipids (fats) and membrane proteins; smooth ER buds off from rough ER, moving the newly-made proteins and lipids to the Golgi body, lysosomes, and membranes.

Vacuole

Fluid-filled, membrane-surrounded cavities inside a cell. The vacuole fills with food being digested and waste material that is on its way out of the cell.

5 0

3 years ago

Read 2 more answers

Phospholipids make up most of the lipid part of the cell membrane. Since water exists on both the outside and inside of a cell,

timurjin [86]

Answer:

Two back-to-back phospholipid layers with the polar heads facing out on both sides

Explanation:

Phospholipids are made up of a head and two tails. The head can be described as a phosphate molecule that is water loving (hydrophilic) whereas fatty acids make up the two tails. The fatty acids repel water and hence are hydrophobic. The assembling of the phospholipids for the the formation of cell membrane depends on these hydrophilic and hydrophobic properties. The assembling of the phospholipids is in two layers. The phosphate head face outwards on both sides to attract water and the tails tend to hide from the water molecules by being composed in the layers of the head. this assembling is termed as the "self-assembly".

3 0

3 years ago

Which law of thermodynamics

Lostsunrise [7]

Your answer is B Second Law of Thermodynamics

6 0

2 years ago

what do you think are some human characteristics that reflect a common ancestry between non human primates and ourselves?

anzhelika [568]

Explanation:

Primates are the mammalian order of organisms, having flexible hands and feet. These organisms have a developed brain and include organisms like lemurs, lorises, humans and apes. Humans are placental mammals, who have a highly developed brain.

Step 2 of 3

The evolutionary relationship between humans and non human primate can be studied based on the anatomical features and behavior that these two organisms share. The human characteristics that reflect a common ancestry between human and non-human primates are as follows:

1. The body hair are present on both the organisms.

2. Giving birth to young ones, after a long gestation period is common in both the organisms.

3. Different types of teeth which are incisor, canine, premolar and molars are present in both the organisms.

4. Both the organisms have the capability to regulate their thermal body temperature.

5. The brain size and capacity of both the organisms is large.

6. The capacity to learn and adapting to suitable behavior based on that is well present in both the organism.

Step 3 of 3

Chimpanzees are primates, belonging to the same ape family as humans. Chimpanzees are the closest living relative of humans. They are basically of two types, pan troglodytes and pan paniscus. Chimpanzee and humans are similar in following ways:

1. Brain volume of humans and chimpanzees is almost similar. Brain volume of human is 1350 ml (milliliter) while that of chimpanzee is 1370 ml.

2. Both humans and chimpanzees socialize among themselves.

3. According to scientific reports, humans and chimpanzees share about 95% similarity in DNA (Deoxyribonucleic acid).

3 0

2 years ago